132 lines
3.3 KiB
TypeScript
132 lines
3.3 KiB
TypeScript
import nodemailer, { Transporter } from "nodemailer";
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import Oy from "oy-vey";
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import * as React from "react";
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import Logger from "@server/logging/logger";
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import { baseStyles } from "./templates/components/EmailLayout";
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const useTestEmailService =
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process.env.NODE_ENV === "development" && !process.env.SMTP_USERNAME;
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type SendMailOptions = {
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to: string;
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subject: string;
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previewText?: string;
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text: string;
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component: React.ReactNode;
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headCSS?: string;
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};
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/**
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* Mailer class to send emails.
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*/
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export class Mailer {
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transporter: Transporter | undefined;
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constructor() {
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if (process.env.SMTP_HOST) {
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this.transporter = nodemailer.createTransport(this.getOptions());
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}
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if (useTestEmailService) {
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Logger.info(
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"email",
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"SMTP_USERNAME not provided, generating test account…"
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);
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this.getTestTransportOptions().then((options) => {
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if (!options) {
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Logger.info(
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"email",
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"Couldn't generate a test account with ethereal.email at this time – emails will not be sent."
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);
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}
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this.transporter = nodemailer.createTransport(options);
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});
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}
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}
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sendMail = async (data: SendMailOptions): Promise<void> => {
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const { transporter } = this;
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if (!transporter) {
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Logger.info(
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"email",
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`Attempted to send email "${data.subject}" to ${data.to} but no transport configured.`
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);
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return;
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}
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const html = Oy.renderTemplate(data.component, {
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title: data.subject,
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headCSS: [baseStyles, data.headCSS].join(" "),
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previewText: data.previewText,
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});
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try {
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Logger.info("email", `Sending email "${data.subject}" to ${data.to}`);
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const info = await transporter.sendMail({
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from: process.env.SMTP_FROM_EMAIL,
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replyTo: process.env.SMTP_REPLY_EMAIL || process.env.SMTP_FROM_EMAIL,
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to: data.to,
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subject: data.subject,
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html,
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text: data.text,
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});
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if (useTestEmailService) {
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Logger.info(
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"email",
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`Preview Url: ${nodemailer.getTestMessageUrl(info)}`
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);
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}
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} catch (err) {
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Logger.error(`Error sending email to ${data.to}`, err);
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throw err; // Re-throw for queue to re-try
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}
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};
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private getOptions() {
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return {
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host: process.env.SMTP_HOST || "",
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port: parseInt(process.env.SMTP_PORT || "", 10),
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secure:
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"SMTP_SECURE" in process.env
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? process.env.SMTP_SECURE === "true"
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: process.env.NODE_ENV === "production",
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auth: process.env.SMTP_USERNAME
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? {
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user: process.env.SMTP_USERNAME || "",
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pass: process.env.SMTP_PASSWORD,
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}
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: undefined,
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tls:
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"SMTP_TLS_CIPHERS" in process.env
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? {
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ciphers: process.env.SMTP_TLS_CIPHERS,
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}
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: undefined,
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};
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}
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private async getTestTransportOptions() {
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try {
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const testAccount = await nodemailer.createTestAccount();
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return {
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host: "smtp.ethereal.email",
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port: 587,
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secure: false,
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auth: {
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user: testAccount.user,
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pass: testAccount.pass,
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},
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};
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} catch (err) {
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return undefined;
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}
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}
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}
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const mailer = new Mailer();
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export default mailer;
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